Om Swami
How do I meditate on a murti or image of my deity?
Meditating on a form
Merely watching an image is like watching TV. Meditation is bringing the image back to your mind's screen again and again with eyes closed. If it keeps its clarity, you are moving ahead on the path.
Meditation is this: you look at a murti (sacred image), close your eyes, and again and again bring that image onto the screen of your mind.